The most common factors are infectious factors, such as cellulitis and nail fungus, and the fingers are usually susceptible to bacterial, viral and fungal infections, especially fungal infections. In some cases of contact dermatitis and contact allergy, skin permeability allergy may occur when contacted with certain toxins of undesirable substances and unclear physicochemical composition, so the fingers may also appear numbness and fever. 3, some peripheral neuritis may also appear numbness and fever in the fingertips. 4, in some connective tissue diseases, rheumatoid arthritis, rheumatoid arthritis, gout, may also appear numbness and fever in the fingers along with soreness and pain.